Page 4th Cover: of Maritime Reporter Magazine (March 15, 1971)

Colt Industries Furnishes

Fairbanks Morse Diesels

To Power Huge Drilling Rigs

Marine drilling rigs—probably the most un- gainly ocean craft built — are scattered throughout the oceans of the world in an ever- widening search for gas and oil.

One of the major companies involved in this search is Ocean Drilling and Exploration Co. of New Orleans, La. Operating some 14 rigs around the world, ODECO uses 35 Fairbanks

Morse diesel engines built by Colt Industries'

Power Systems Division in Beloit, Wis.

Initial trial runs were completed in mid-

January on the most recent addition to the fleet—Ocean Prospector. This rig is powered by four Fairbanks Morse, 10-cylinder, Model 38D8-J/6 diesel engines. Each engine is rated at 1,600 hp at 720 rpm, and they drive eight 1,600 kw, traction type DC generators and two 1,000 kw, AC generators.

Two DC generators are mounted in series on each elongated, two-piece engine skid and direct connected to the engine. On two of the units, a third AC generator is also mounted on the skid and direct connected to the prime mover.

Fairbanks Morse opposed piston engines have long been associated with marine power around the world. The Model 38 series en- gines gained particular fame during World

War II when they powered a large percentage of the U.S. submarine fleet, as well as surface vessels.

Commissioning ceremonies for the $12 mil- lion self-propelled, semi-submersible craft were held on January 30 at Mitsubishi Shipyard, •Hiroshima, Japan, where it was built. The new rig will begin operations this month in

Before the advent of radio, flags flown from the windows of the Gillen offices signaled the company's tugs in the harbor.

White meant continue as originally ordered ... green meant tele- phone from the next destination . . . red was the signal to return immediately to the company pier.

Today, the entire Gillen fleet consists of the finest and most modern equipment. Communications are instant. So is

Gillen's response to your needs with the finest and most effi- cient lighterage and towing service available.

LIGHTERAGE AND TOWING M a _

I I esiAy 140 CEDAR STREET, NEW YORK, N.Y. 10006 • 212-964-8787 the Sea of Japan under joint ownership of

ODECO and Japan Industrial Land Develop- ment Company.

Trial runs indicate a speed of seven knots ahead and three knots astern. The rig has a minimum turning radius of approximately two barge lengths. A unique feature of the drill- ing unit is twin, kort nozzle type rudders which are located at the after end of each of the two inboard pontoons. Propulsion rooms, located in the pontoons, house the two direct current propulsion motors, shafting and re- lated machinery. The two motors deliver 5,400 shaft horsepower.

Sixteen vertical columns are connected to the four pontoons to support the drilling plat- form. The top of the columns are 120 feet from the base of the pontoons. The Ocean

Prospector is capable of carrying 2,250 long tons of variable load topside, with additional drill water and fuel oil in the pontoons at 70-foot draft.

The overall length is just over 344 feet, with beam measuring 263^4 feet. The rated operat- ing depth of the unit afloat is 600 feet of water. Storage capacities are 4,600 barrels of fuel, 14,087 barrels of drill water, 355 barrels of potable water, 1,370 barrels of liquid mud and 3,060 sacks of dry mud. The main deck area is 28,200 square feet. Additionally, there is a heliport and modern accommodations for 69 men.

Drilling equipment aboard the rig will be electrically powered from the Fairbanks Morse engines driving generators. This is the same power source used to energize the propulsion motors.

SNAME New York Hears Paper

On Design Of Icebreakers

Attending the meeting at Stevens Institute were, left to right: Charles W. Wilson, secretary-treasurer of the

Section; Daniel D. Strohmeier, SNAME national presi- dent; J. Gordon German, author; Warren I. Signed, chairman of the Section, and Norman R. Farmer, vice chairman.

The New York Metropolitan Section of The

Society of Naval Architects and Marine En- gineers met on February 23 at the Stevens

Institute of Technology in Hoboken, N.J. The meeting began with a tour and demonstration of towing tank facilities at Davidson Labora- tory, located at 711 Hudson Street, two blocks from Stevens Center.

At the technical session, which was preceded by a social hour and dinner, a technical paper entitled "Some Considerations in the Design of Polar Icebreakers" was presented by J. Gor- don German, of German & Milne. The authors of the paper are J.G. German, C.F. Collins, and A.R. Webster.

This paper presents the results of some recent research in the field of icebreaker de- sign by Canada's most eminent naval archi- tect. Mr. German has been responsible for, or associated with, the majority of Canadian ice- breaker designs, including the 27,000-hp T/E icebreaker CGCS Louis S. St-Laurent. 40 Maritime Reporter/Engineering News